help with geometry please

so is the following statement always true, never true, or sometimes true. "if a median of a triangle is also an altitude, then it is also an angle bisector.
Next, if angle A is greater then angle B. WHat are the restrictions on the value of X. There is a triangle in the picture that shows, BC=X+10, AC=2X+4, and AB is not given. A, B, C are the only points on the triangle. PLEASE help! geometry is hard.